A Norwegian Airlines long-haul flight from Rome to Los Angeles returned to the Italian city after parts of one of its engines fell off, landing on the streets below, terrifying bystanders and smashing car windows and houses.
The 787, which is fitted with Trent 1000 engines, returned to land after just over 23 minutes in the air.
The aircraft took off just after 4pm (local time) and moments later, residents reported "glowing red metal" raining down on the street.
Esterino Montino, the mayor of Fiumicino, has been pushing for a change to flight paths in and out of the city to take aircraft away from residential areas.
Montino said 25 vehicles and 12 houses were damaged by debris falling off the aircraft. One man was also hit, but was somehow uninjured.
Norwegian Airlines confirmed a technical issue forced the aircraft to return to Rome.